A workaround could be to implementing a shared library to load using LD_PRELOAD, which could provide a fcntl() wrapper masking the lack of F_OFD_SETLKW in WSL 1 by implementing the same broken locking mechanism as F_SETLK? Then one could use `LD_PRELOAD=brokenwsllocking apt upgrade` or similar to upgrade systemd when using WSL 1.
-- Happy hacking Petter Reinholdtsen
